Key to the known species Capnogryllacris
1 Processes of posterior margin on male ninth abdominal tergite nearly acinaciform................... C. axinis nom. nov.
- Processes of posterior margin on male ninth abdominal tergite spine-shaped....................................... 2
2 Body rusty, pronotum with black spots.......................................................... C. rufonotata
- Body yellow brown, pronotum without black spots........................................................... 3 3 Margins of pronotum black, disc without median stripe....................................................... 4
- Pronotum without black margins, disc with distinct black spots................................................. 5
- Occiput and genae with yellow brown....................................................... C. nigromarginata
4 Apices of all femora yellow brown........................................................... C. melanocrania
- Apices of all femora black................................................................... C. nanlingensis
5 Posterior margin of eyes with 1 pair of black longitudinal stripes, anterior margin of pronotum with 1 pair of black spots............................................................................................. C. bimaculata
- Occiput yellowish, unicolour; pronotum only with posteriorly black margin................................ C. spinosa